Setting CSS for horizontal rules.

docs/extra.less

@@ -81,7 +81,7 @@
 	background:none;
 }
 
-#titlearea,.footer,.contents,div.header,.memdoc,table.doxtable td,table.doxtable th {
+#titlearea,.footer,.contents,div.header,.memdoc,table.doxtable td,table.doxtable th,hr,.memSeparator {
 	border:none;
 }
 
@@ -280,9 +280,8 @@ div.directory {
 	border-radius:4px;
 }
 
-.memSeparator {
+hr,.memSeparator {
 	height:2px;
-	border:none;
 	background:linear-gradient(to right,@def-separator-color 0%,darken(@def-separator-color, 10%) 50%,@def-separator-color 100%);
 }